Visualization Library, the OpenGL 2.1 based framework for portable 3D graphics has been released for beta testing! Among the new features this latest release introduces support to OpenGL-accelerated occlusion culling via GL_ARB_occlusion_query, enhanced support to framebuffer objects, polygon tessellation, bicubic Bezier surfaces, extrusions, catmull-rom interpolators, molecule visualization, portal/sector scene management and various other enhancements.